Home Hardware & Fasteners Self-Tapping Screws Phillips Head Self-Tapping Screws – Flat Head (#10 x 1/2”) Marine Fasteners Inc Phillips Head Self-Tapping Screws – Flat Head (#10 x 1/2”) $10.29 Phillips Head Self-Tapping Screws – Flat Head (#10 x 1/2”) quantity Add to cart Product Details Product Details #10 x 1/2″. Stainless steel. Sold in boxes of 100 only.